Moving unmovable data sets

When copying unmovable data sets to like devices, DFSMSdss places them at the same track locations on the target volume under the following conditions:

The target volume has an indexed VTOC.
The space where the unmovable data would be placed is available.

If any of these conditions do not exist, you must specify the FORCE keyword to move the data set. FORCE enables DFSMSdss to treat the unmovable data set as movable and to move it to an unlike device. Because DFSMSdss places the data set in any available location when FORCE is specified, use FORCE with caution.

If some data sets have CCHHR (cylinder, cylinder, head, head, record) location-dependent data and you are using FORCE, exclude these data sets with the EXCLUDE keyword to prevent DFSMSdss from moving location-dependent data sets.

Another way to position data sets in a specific location on a volume is to allocate all space on the target volume except where you plan to place the unmovable data sets. Then move the unmovable data sets with FORCE and afterwards scratch the dummy space allocation.